Ring spinning and twisting frame



Sept. 1, 1925. 1,551,757

, G.C.LAURENCY RING SPINNING AND TWISIING FRAME Filed Aug. 5, 1924 2 Sheets-Sheet 1 Sept. 1, 1925. 1,551,757

G. C. LAURENCY RING SPINNING AND TWISTING FRAME Filed Aug; 5, 1924 2 Sheets-heet 2 Inventor.-

Patented Sept. 1, 1925 UNITED STATES currmuiun oLEmnnr LAUnEnoY, or 'rwrcxnnnam, ENGLAND.

RING SPINNING AND TWISTING FRAME.

Application flled August 5, 1924. Serial No. 780,148.

To all whom/it may concern:

Be it known that I, GUILLAUME- CLEMENT LAUnENoY, of 64. Denton Road, Twickenharm, in the county of Middlesex, England, a subject of'theKing of the Belgians, have invented certain new and useful Improvements in or Relating to Ring Spinning and Twisting Frames, of which the following is a specification.

The object of the present invention is to enable ring spinning and ring. twisting frames to wind all kind of yarns in bobbins or cops either on the bare spindle or on tubes of small diameter as easily as on the largest diameter of the cone of the yarn bobbin.

.It is known that the usual ring frame is only employed, in general, for yarns adapt-. ed to be wound on large tubes of wood or millboard, which are slipped over the spindle to increase the diameter of the latter. The system is not employed for bobbins usually wound on bare spindles or on paper tubes in intermittent spinning and twisting frames such as the mule. The yarn is twisted and wound in a continuous manner in the ring frame; after leaving the delivery rollers the yarn is passed through "the traveller, which it causes to slide on the ring which guides it round the spindle. It then winds itself, in form of a bobbin, round a tube which revolves with said spindle. The movement of the spindle is therefore transmitted to, the traveller by means of the yarn, and it is I th resistance which the traveller opposes to the tractive effort of the yarn that determines the tension and the winding of the latter.

Now, the strain to which the yarn is subjected in order to transmit this movement to the traveller varies withthe diameter and on the part of the bobbin on which it is to, be wound. This effort is almost inappreci able when the yarn isbeing wound on the large diameters at the base of the cone,- since the tractive elfort is then exerted in a direction almost tangential to the movement tobe' transmitted, whilst the resistance offered by the traveller, and conse-I j quently the effort the yarn has to exert to draw it around, increases considerably when 3 the winding has to be effected-on the, small path which the traveller has to follow. The

tractive effort of the yarn thus sets up friction between the traveller and the outer edge of the ring, and since this friction increases not' only as a direct result of the diminution of the diameter of the windings, but also by reason of the increased effort exerted by the yarn, the traveller seizes against the ring and the excessive tension breaks the yarn. This ull of the yarn toward the center of the ring facilitates the drawing round of the traveller in the mechanism of the present invention, and the tension of the yarn remains within suitable limits through the length of the cone of the bobbin. According to the present invention, a traveller is formed with a forward projection against which the yarn bears when being wound on the small diameters of the bobbin, thus causing the outer part of the traveller to come into contact with the ring at a point situated in a forward radial plane in the direction of travel, and with an up-' the vertical part of the yarn for preventing the slanting of the traveller in the direction of the movement.

Two embodiments of the invention, in cluding two forms of travellers having the said forward projection and the said upward extension in relation with the rings on which they are to run, are illustrated in the accompanying drawings; Fig. 1 is a sectional elevation of a ring with one form of traveller and a part of the spindle on which the yarn is being wound; Figs. 2, 3, 4 and 5 are plans showing the respective positions of the traveller Fig. 2 before the yarn is under tension; Fig. 3 when the yarn is under tension and being wound on a small diameter; Fig. 4.- when being wound on an intermediate diameter, and Fig. 5 on a large diameter; Fig. 6 is a sectional elevation of the traveller with a portion of the ring on a considerably larger scale Fig. 7 is a sectional elevation of a modified form of traveller with a portion of the ring'and Fig. 8 is a plan thereof, to a reduced scale, showing the whole of the ring and the spindle indicating the position of the parts when in operation. I

As can be seen from Figs. '1, 6 and 7, the ring a which is carried by the usual ring rail 6 Fig. 1) is substantially of T section, and te yarn :veomin-g from the delivery rollers, passes bet en, the' part g and f of the trav $23 now.

eller, then in front of the part g; after that the yarn passes at s in front of the part 0, and then at t, as far as the spindle 6.

Before the spindle is set running, the traveller occupies the position shown in Fig. 2, but as soon as the spindle begins to revolve, the tension of the yarn tends to draw the parts 8 and t, into alignment, with the result that the part 0 of the traveller is pushed rearwards, said traveller turning against the point of support is as on a pivot, .until the part at of the traveller comes into contact with the outer periphery of the head of the ring a as shown in Fig. 8.

From this Fig. 3, it will be seen that this point of contact between the traveller and the ring a lies in a radial plane situated forwardly of the plane in which the tractive effort of the yarn is exerted on the traveller, and. that, as a result of this lead on the ring, the traveller yields to the pull of the yarn although the latter is being wound on a small diameter; the traveller thus sliding along the ring, so that breakage of the yarn is prevented.

The parts 8 and t of the yarn, align themselves automatically in proportion as the part t moves further away from the spindle when the winding is being effected on a larger diameter (Figs. 4 and 5). The pressure the parts 8 and t of the yarn exert against the part 0 of the traveller decreases in proportion as the diameter on which the yarn is being wound increases, and thus permits the said traveller progressively greater freedom to resume the position according to Fig. 2, by yielding to the centrifugal force acting on its outer portion. Hence, the lead of the point of contact d is abolished when the part I? of the yarn is more remote from the spindle, in winding on large diameters, but is restored when said part t comes nearer to the spindleas the result of winding on small diameters, the traveller then taking up the position shown in Fig. 3. In other words, every time the yarn is ready to be wound on a small diameter, the part (i of the traveller is ahead as already mentioned, and any tendency of the traveller to seize on the ring is prevented, seeing that the contact of the extension g against the vertical part of the yarn prevents the slanting forward of the head of the traveller.

In order to reduce the weight of the traveller illustrated in Figs. 1 and 6, and to simplify the manufacture, the pivotal movev ment of the traveller can take place about the inner edgeof the ring as indicated at 9' Figs. 7 and 8, and consequently, the inclination of the under surface of this inner ed e of the ring indicated at is Figs. 1 and 6 ecomes unnecessary when the form of traveller indicated in Fig. 7 is employed. The tilted position of the traveller enables ,rer

the tension of the yarn to vary the resistance of said traveller by regulating the pressure of the centrifugal force of the traveller which presses it against the inner edge of the ring at the points 0 and g (Figs. 7 and 8). The tension of the yarn may lessen, and even completely balance the centrifugal force of the traveller and consequently the resulting friction, by lessening or completely relieving the pressure of the traveller at these points 0 and g. This pressure is the more powerful as the tension of the yarn, being weaker, allows the centrifugal force to come more strongly into action, and it naturally becomes lighter in proportion as the yarn is more tightly stretched, the result being that the tension of the yarn is automatically maintained within suitable limits.

The yarn is inserted in the travellers in the usual way, and the extension which may also be an open ring, is for the purpose already mentioned, namely that of preventing the slanting of the traveller in the direction of movement. The shape of the travellers and of the rings may of course, be modified, either with a view to facilitating manufacture, or for use with special counts,

and kinds of yarn, provided that the functions described above can be discharged.

I claim v 1. For use in ring frames, a traveller having a forward projection against which the yarn bears when it is being wound on a small diameter said projection being pushed rearwards under the pull due to the tension of said yarn, causing a tilt of the outer part of said traveller in the direction of travel, and bringing said part into con- .tact with the outer edge of the ring at a point lying in a radial plane ahead of that in which the pull of the yarn is exerted on the traveller.

2. For use in ring frames, a traveller having means to causea tilt in a forward direction, the resistance of said traveller being regulated by the tension of the yarn which moves said traveller, any increase in the tension of said yarn having the effect of diminishing the pressure against the interior of the ring of the'friction set up'by the centrifugal force of the traveller, and, similarly, Y

any diminution in said tension of the yarn having the effect of increasing the resist-- ance offered by the traveller to the pull of the yarn by allowing the pressure of the centrifugal force of the carrier to act more powerfully against the inner edge of the guiding ringi 3. For use in ring frames, a traveller havin means to cause a tilt in. a forward direction and the resistance of which is regulated by the tension of the yarn, one part of said traveller forming a forward projection against which the yarn bears with a I spindle on which a cop of yarn may be wound under tension said yarn passing from said delivery rollers to said cop and being guided thereto by said traveller, the yarn exerting a tractive effort on said trav-' eller at the point at which it is guided thereby, said traveller having one part nearer the spindle than another part, and having a forward projection from the first mentioned (part, and a ivot about which it is adapte to be turne the tension in the yarn between said traveller and said cop causing said yarn to bear against said forward projection when said yarn is' being wound on to a part of small diameter, and'to turn'said traveller about its pivot, the second mentioned part of said traveller being thus advanced into contact with said ring at a point in advance of that plane in which lies the point at which the tension in the yarn exerts a tractive effort on the traveller and the said travel er, the yarn exerting a tractive efi'ort on said traveller at the point at which it is guided thereby, said ring having a head and a downwardly extending-web and said traveller being bent so as to overlie the head of the ring and so as. to embrace and underlie the respective sides of said head.

and extend towardssaid web, that part of said traveller which underlies the side of said head nearer to said spindle beingbent back on itself, then towards said spindle, then forwardly and towards said spindle, then vertically upwards, constituting a forward projection, then downwardly, away from saidspindle and rearwardly, and then j the point at which the te nsion in the away from said spindle in a horizontal plane, constituting an u ward projection, that part of said travel er which is bent back on itself forming a pivot about which said traveller is adapted to be turned, the tension in the yarn between said traveller and said cop causing said yarn to bear against said forward projection when said yarn is being wound on ma part of small diameter, and to turn said traveller about its pivot, that part of said traveller between the part which overlies the head of the ring and the part which underlies the side. of said head remote from said spindle being thus advamgd into contact with said ring at a point in advance of that plane in which lie the point at which the tension in the yarn exerts a tractive effort on the traveller and the point at which the yarn being wound is tangential to the cop. v

7. A traveller for use on a ring frame including a ring, delivery rollers and a spindle on which latter a cop of yarn may be wound under tension, said-yarn passing from said delivery rollers to said cop and being guided thereto by said traveller, the

yarn exerting a tractive effort on said traveller at the point at which it is guided thereby, said ring having a head and a down wardly extending web, the under surface of that side of said head which is nearer the said spindle being inclined downwardly and toward said spindle, and said traveller having one part nearer said spindle than .an-

other part, and an upward projection which bears against the vertical part of the yarn for preventing the slanting of. the said traveller, the first mentioned part forming 'a forward projection and a pivot about which said traveller is adapted to be turned,

said pivot being in contact with the under surface ofthat. side of said head which is nearer the spindle, the tension in the yarn between said traveller and said cop causing said yarn to bear against said forward projection when the yarn is being wound on to a part of small diameter and to turn said traveller about its pivot, the second mentioned part of said traveller being thus advanced into contact with said ring at a point in advance of that plane in which lie yarn exerts a tractive effort on the traveller and the point at which the yarn being wound is tangential to the cop. I

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